JP2014070369A - Fitting structure of cover member, and cover member used therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fitting structure of a cover member, capable of easily attaching and surely fixing the cover member to an opening of a pipe member.SOLUTION: A fitting structure of a cover member 2 blocks an opening of each of inflow entrances 1a, 1c and an inspection port 1d (hereinafter referred to as "inflow entrance, etc.") of a drainage header H including the plurality of inflow entrances 1a, 1c and the inspection port 1d. A locking part 2c is formed in the cover member 2 and a locked part 1e which engages with the locking part 2c are formed in each of the inflow entrance, etc.. The locking part 2c of the cover member 2 engages with the locked part 1e of the inflow entrance, etc. to attach the cover member 2 to the opening of the inflow entrance, etc.. By engaging the locking part 2c formed in the cover member 2 with the locked part 1e formed in each of the inflow entrances 1a, 1c and the inspection port 1d, and by adopting a structure in which the cover member 2 is attached to the opening of the inflow entrance, the cover member 2 can be easily and surely attached to the inflow entrance, etc. of the drainage header H.

Description

  The present invention relates to a mounting structure for a lid member that is disposed mainly under a floor of a house and that closes an opening of a pipe member connected to a water facility such as a bathroom, a washstand, and a kitchen, and a lid member used therefor.

  In recent years, drainage headers have been placed under the floor, drainage branch pipes from water facilities such as bathrooms, washstands and kitchens are connected to the drainage headers, and downstream drainage pipes connected to the drainage headers penetrate the foundations of houses. Thus, drainage systems that have been led out to the outdoors have been successfully constructed. Such a drainage system joins the drainage from each water facility to the drainage header and discharges it outdoors through the downstream drainage pipe that penetrates the foundation. Compared to the conventional drainage system, the number of drainage basins installed outdoors can be greatly reduced, and the cost can be reduced.

  A drainage branch pipe from a water facility such as a bathroom is usually connected to the inlet of the drainage header used in the drainage system, but the drainage header is provided with a plurality of inlets. A lid member is attached to the inflow port which is not closed. Also, the inspection port for inspecting the inside of the drainage header is usually closed by a lid member (for example, Patent Document 1).

The lid member is attached to the inflow port or the inspection port of the drainage header mainly by the following three methods.
(1) A method in which a lid member is fitted and inserted into the branch pipe inlet through packing, and an annular flange formed on the outer edge of the lid member is brought into contact with and fixed to the opening end of the inlet.
(2) A method in which bolts are provided at the inlet and inspection port of the drainage header, an insertion hole is provided in the flange of the lid member, the bolt of the drainage header is inserted into the insertion hole of the lid member, and the bolt and nut are fixed.
(3) A method in which a female screw is formed on the lid member, and a male screw is formed on the inlet or inspection port of the drainage header, and they are fixed by screwing them together.

JP 2002-106209 A

However, in the case where the lid member is inserted and fixed via the packing of (1) above, the lid member may drop off and leak when large pressure is generated inside the drainage header. Met.
In addition, since the bolts and nuts fixed in (2) above require the use of separate members such as bolts and nuts, a special tool is required and the workability is not good. Since it is necessary to perform the attaching / detaching operation of the lid member in a narrow space, it is difficult to tighten the nut properly. If the bolt and the nut are loosened, there is a possibility of leaking water from there.
Similarly, in the case of fixing by screwing the male screw and the female screw in (3) above, the work of tightening the lid member to the end is troublesome, and there is a possibility that loosening may occur and lead to water leakage. Met.

  The present invention has been made in view of the above problems, and the problem to be solved is that a lid member can be easily attached and securely fixed to an opening of a tube member, and can be fixed by various vibrations and pressures. An object of the present invention is to provide a lid member mounting structure and a lid member used therefor, which do not cause the lid member to loosen or fall off.

  In order to achieve the above object, a lid member mounting structure according to the present invention is a lid member mounting structure for closing an opening of a pipe member, and a locking part or / and a locked part are formed on the lid member. The locked portion or / and the locking portion that locks with the locking portion or / and the locked portion are formed in the vicinity of the opening of the tube member, and the locking of the lid member The lid member is attached to the opening of the tube member by locking the portion or / and the locked portion with the locked portion or / and the locking portion of the tube member. It is.

  In the drain header cover member mounting structure according to the present invention, the pipe member is a drain header having a plurality of inlets and inspection ports (hereinafter referred to as inlets, etc.). A locked portion or / and a locked portion to be locked with the locking portion are formed in the inflow port or the like, and the locked portion or / and the locked portion of the lid member and the engaged port or the like It is preferable that the lid member is attached to an opening such as an inflow port of the drainage header by locking with the stopper or / and the locking part. Further, the latching portion or / and the latched portion of the lid member are formed extending from the rear end of the outer periphery of the lid member toward the tube member, and the latched portion or / and the latching portion of the tube member are also formed. The locking part is formed on the outer peripheral surface of the pipe member, and the locking part of the lid member or / and the locked part and the locked part such as the inlet in the state where the lid member is attached to the opening of the pipe member It is preferable that a part or / and a latching | locking part are located in the outer peripheral surface side of a pipe member. In particular, the locking part is one of an L-shaped protruding piece, a notch, and a groove, the locked part is a convex part, and the lid member is brought into contact with the opening of the tube member. It is preferable that the locking portion and the locked portion are locked when the lock is rotated, and the locking member that prevents the locking portion and the locked portion from being released from being locked is provided in the locking portion and / or the locked portion. More preferably, it is formed at the stop.

  Next, the lid member of the present invention is a lid member that closes the opening of the tube member, and is a latched portion that is formed in the vicinity of the opening of the tube member and / or is latched with the latching portion. Or / and the latched portion is formed to extend from the rear end of the outer periphery of the lid member toward the tube member, and in the state where the lid member is attached to the opening of the tube member, Alternatively, the locked portion is located on the outer peripheral surface side of the tube member.

  The lid member mounting structure of the present invention is different from the conventional methods (1) to (3) described above, and the locking portion or / and the locked portion formed on the lid member and the vicinity of the opening of the tube member By adopting a configuration in which the lid member is attached to the opening of the tube member by locking the locked portion or / and the latch portion formed on the tube member, the lid member can be easily and reliably attached to the tube member. Can be attached to the opening. Further, by adopting such a locking structure by the locking portion and the locked portion, the lid member is not loosened by various vibrations and pressures, and there is no fear that it will easily come off.

  Further, the pipe member is a drainage header having a plurality of inlets and inspection ports (hereinafter referred to as inlets, etc.), and a locked part or / and a locked part to be locked with the locked part or And / or a locking part is formed at the inlet, etc., and the locking part or / and the locked part of the lid member and the locked part or / and the locking part such as the inlet are engaged. The number of drainage drains installed outdoors by combining the drainage from each water facility as in the lid attachment structure where the lid is attached to the opening of the drainage header, etc. By adopting the mounting structure that produces the above-mentioned excellent effects of the present invention to the drainage header inlet and the like that can greatly reduce the cost, the inlet and the like that are not used even in a narrow space under the floor Can be quickly and reliably closed. In particular, since the drainage from each water facility joins the inside of this drainage header, pressure fluctuation is likely to occur and the lid member is likely to drop off, so that the lid member does not fall off as in the present invention. Employment is highly preferred.

  Furthermore, the latching portion or / and the latched portion of the lid member are formed extending from the rear end of the outer periphery of the lid member toward the tube member, and the latched portion or / and the latching portion of the tube member are also formed. The locking part is formed on the outer peripheral surface of the pipe member, and the locking part of the lid member or / and the locked part and the locked part such as the inlet in the state where the lid member is attached to the opening of the pipe member Since the attachment structure of the lid member in which the portion or / and the locking portion is located on the outer peripheral surface side of the tube member can visually recognize the locking state of the locking portion and the locked portion from the outside of the tube member, The lid member is securely attached, and the workability is improved.

  In particular, the locking part is one of an L-shaped protruding piece, a notch, and a groove, the locked part is a convex part, and the lid member is brought into contact with the opening of the tube member. When the lid is rotated, the lid mounting structure that the locking portion and the locked portion are locked becomes more secure by making the locking portion and the locked portion as described above. There is no fear that the lid member will fall off due to the pressure from the inside of the tube member.

  In addition, the attachment structure of the lid member formed on the locking portion or / and the locked portion is prevented from coming off the locked state of the locking portion and the locked portion by various vibrations. The locked state between the locking part and the locked part is not released.

  Next, the lid member of the present invention has a locking portion or / and a locked portion that locks with the locked portion or / and the locking portion formed in the vicinity of the opening of the tube member. By forming in this way, it is possible to employ a locking structure that locks and attaches the lid member to the opening of the tube member. Therefore, the lid member can be easily and surely attached to the opening of the tube member, and the lid member is not loosened by various vibrations and pressures, and there is no fear that the lid member is easily detached. Further, the locking portion and the locked portion are formed by extending from the rear end of the outer periphery of the lid member toward the tube member, so that the locking state of the locking portion and the locked portion can be obtained from the outside of the tube member. Since it can be visually recognized, the lid member can be securely attached and the workability is also improved.

It is a front view which shows the attachment structure of the cover member which concerns on one Embodiment of this invention. It is a perspective view showing a lid member concerning one embodiment of the present invention. It is explanatory drawing which shows the procedure which attaches the cover member to the inflow port of a drainage header. It is sectional drawing of the state which attached the cover member to the inflow port of the drainage header. It is the elements on larger scale which show the latching state of the latching | locking part of the cover member, and the to-be-latched part of the inflow port of a drainage header, Comprising: (a) is the elements on larger scale of embodiment of FIG. 3, (b) is others (C) is the elements on larger scale of another embodiment. It is the schematic which shows the construction example of the attachment structure of the cover member. It is a disassembled front view which shows the attachment structure of the cover member which concerns on other embodiment of this invention.

  Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings.

  As shown in FIGS. 1 and 6, the lid member mounting structure of the present invention is arranged on the soil concrete 5 under the floor of the house, and joins drainage from water facilities (not shown) such as bathrooms, washstands, and kitchens. Thus, the lid member 2 closes the openings of the inflow ports 1a and 1c and the inspection port 1d of the drainage header H that drains to the outdoor drainage pipe 6 through the downstream drainage pipe 4.

  This drainage header H is a synthetic resin horizontal cylinder having an oval cross-sectional shape with good drainage flow. As shown in FIG. 1, an upstream drainage pipe 3 is provided at the upstream end of the drainage header H. An inflow port 1a for connection is provided, an outflow port 1b for connecting the downstream side drainage pipe 4 is provided at the downstream end, and a plurality of inflow ports 1c for connecting drainage branch pipes (not shown) are provided on both side surfaces. 1c is provided. Each of these inflow ports 1a and 1c is offset upward so that the upper end of the inflow ports 1a and 1c is substantially the same height as the upper end of the drainage header H, and even if the water level inside the drainage header H rises. The upstream drain pipes and drain branch pipes connected to the inlets 1a and 1c are not blocked. On the other hand, the outlet 1b at the downstream end is biased downward so that the lowermost portion of the inner bottom surface of the downstream drainage pipe 4 connected thereto and the lowermost portion of the inner bottom surface of the drainage header H are at the same height. All the drainage flows out to the downstream drainage pipe 4 without stagnation at the bottom of the drainage header H. In addition, a plurality of inspection ports 1d and 1d are formed on the upper surface of the drainage header H, and a lid member 2 described later is detachably attached.

  The drainage header H is not integrally molded with a synthetic resin, but is assembled by joining and integrating a plurality of header joints 1 and 1 molded with a synthetic resin. This header joint 1 is formed with a receiving port 1f on one end side (upstream side) of a short cylindrical body having an oval cross-sectional shape, and an inlet 1c of a drainage branch pipe is provided on one side of the short cylindrical body. And an inspection port 1d is formed on the upper surface of the short cylindrical body, and a lid member 2 is attached. The header joint on the upstream side adjacent to the receiving port 1f of the header joint 1 is formed. The other end (downstream side) of 1 is inserted and watertightly connected with an adhesive, and the inlet 1a of the upstream drain pipe is connected to the receiving port 1f of the header joint 1 on the most upstream side. The drainage header H is assembled by being inserted and connected in a watertight manner with an adhesive, and by inserting the outlet 1b into the end of the header joint 1 on the most downstream side and connected in a watertight manner with an adhesive.

  As described above, the drainage header H can be assembled with a desired number of drainage branch pipe inlets 1c by increasing or decreasing the number of header joints 1 connected. Depending on the combination of the header joint 1 with the inlet 1c and the header joint 1 with the inlet 1c formed on the opposite side, the drainage header H having the inlet 1c only on one side or desired on both sides A drainage header H having a number of inlets 1c can be assembled.

  As described above, the drainage header H having the plurality of drainage branch inlets 1c is assembled by joining the header joints 1 and 1, but the drainage branch inlets 1c that are not used therein are assembled therein. May come out. Moreover, the upstream drainage pipe 3 may be connected to the inflow port 1c of a drainage branch pipe on the relationship of piping. In such a case, it is necessary to close the openings of the inflow ports 1a and 1c that are not used. Further, the inspection port 1d is used for inspecting and maintaining the inside of the drainage header H from the opening, and the opening is normally closed. Therefore, in order to close the openings of the unused inlets 1a and 1c and the inspection port 1d, a lid member 2 described below is used.

  That is, as shown in FIGS. 2 and 4, the lid member 2 includes a cap body 2 a whose front end (drainage header H side) is closed and a rear end portion (opposite side of the drainage header H) of the cap body 2 a. ) Around the flange portion 2b, the locking portion 2c formed on the flange portion 2b, the rod-shaped protrusion 2d provided on the end surface of the flange portion 2b, and the packing provided around the peripheral surface of the cap body 2a. A fitting groove 2e and a waterproof packing 2f fitted in the packing fitting groove 2e are provided.

As shown in FIG. 4, the cap body 2a is formed so that its outer diameter is substantially equal to the inner diameter of the inlet 1a of the upstream drain pipe 3, the inlet 1c of the drain branch, and the inspection port 1d. Then, by inserting the cap main body 2a into the openings of the inlets 1a and 1c and the inspection port 1d, the waterproof packing 2f fitted in the packing fitting groove 2e on the peripheral surface thereof becomes the inlets 1a and 1c. In addition, it is in close contact with the inner peripheral surface of the inspection port 1d, and a good water stoppage is realized.
In addition, when the water can be surely stopped by the end surface (back surface side) of the lid member 2 and the end surface of the inflow port 1a, the cap body 2a is not necessarily an essential component.

  As shown in FIG. 4, the flange portion 2b provided around the rear end of the cap body 2a (opposite to the drainage header H) flows when the lid member 2 is inserted into the opening of the inflow port 1a. It contacts the upstream end face of the inlet 1a and plays a role of preventing the lid member 2 from entering the drain header H. As shown in FIG. 2, the flange portion 2 b is not a complete circle, and one side edge and the side edge facing the flange are linearly cut (refer to the flange portion 2 b in FIG. 2). Upper and lower edges). The portion where the side edge of the flange portion 2b is cut is substantially equal to the outer diameter of the inflow port 1a, and the diameter of the arc-shaped portion which is not cut is larger than the diameter of the inflow port 1a. And the latching | locking part 2c demonstrated below is formed from the end surface by the side of the drainage header H of this circular arc part with a large diameter.

  As shown in FIGS. 3 and 5 (a), the locking portion 2c is formed by extending from the end surface of the flange portion 2b on the inflow port 1a side of the drainage header H toward the inflow port 1a. A total of two letter-shaped protruding pieces, one on each of the large-diameter arc portions of the flange portion 2b. The locking portion 2c is locked with a locked portion 1e formed in the inlet 1a of the upstream drainage pipe 3 of the drainage header H, the inlet 1c of the drainage branch pipe, or the inspection port 1d. The member 2 can be securely attached to the inlets 1a and 1c and the inspection port 1d.

  As shown in FIGS. 1, 3, and 5 (a), the locked portion 1 e that locks the locking portion 2 c of the lid member 2 is formed from the outer peripheral surfaces of the inflow ports 1 a and 1 c and the inspection port 1 d. Each is a substantially cubic convex portion projecting outward, and the two side surfaces of the locked portion 1e are in contact with and locked to the two inner surfaces of the L-shaped locking portion 2c. Thus, the lid member 2 is attached to the inflow ports 1a and 1c and the inspection port 1d without being detached.

  Next, as shown in FIGS. 2 and 3, four rod-shaped protrusions 2d are provided on the end surface on the opposite side of the flange portion 2b where the locking portion 2c is formed. Two rod-shaped projections 2d are provided in the arc portion having a large diameter of the flange portion 2b, and two are provided in the arc portion having a large diameter located diagonally, and between the rod-shaped projections 2d and 2d. By passing a tool such as a rod or screwdriver and passing the tool between the other rod-shaped projections 2d and 2d and hooking the tool on the rod-shaped projection 2d and rotating it, the locking portion 2c of the lid member 2 and the inlet The lid member 2 can be easily attached or removed by locking the locked portion 1e of 1a or releasing the locking.

That is, in order to attach the lid member 2 to the inlet 1a of the drainage header H, as shown in FIG. 3A, the cap body 2a of the lid member 2 is inserted into the opening of the inlet 1a. When the cap body 2a of the lid member 2 is inserted into the opening of the inflow port 1a, a tool is hooked on the pair of rod-shaped protrusions 2d and 2d provided on the flange portion 2b, and as shown in FIG. The lid member 2 is slightly rotated counterclockwise. When the lid member 2 is thus rotated counterclockwise, as shown in FIG. 3C, the locking portion 2c of the lid member 2 is locked to the locked portion 1e of the inflow port 1a. The lid member 2 can be easily attached to the inflow port 1a of the drainage header H by slightly rotating the lid member 2. When the lid member 2 is attached to the inflow port 1a of the drainage header H in the above process, the locking portion 2c is formed in an arc portion having a large diameter of the flange portion 2b, so that the locking portion 2c is the outer periphery of the inflow port 1a. Located on the surface side. Therefore, since the locking state of the locking portion 2c and the locked portion 1e can be visually recognized from the outside of the drainage header H-, the locking portion 2c and the locked portion 1e are locked even if they are attached. The failure of not doing so can be avoided. Further, by forming the locking portion 2c and the locked portion 1e in the above-described shape, force (in the direction in which the lid member 2 is dropped) from the drainage header H to the lid member 2 due to pressure from the inside of the drainage header H. Force), the two L-shaped inner surfaces of the locking portion 2c and the two surfaces (upper side surface and left side surface in FIG. 3) of the locked portion 1e are securely and closely locked (particularly The inner side surface extending from the bent portion of the locking portion 2c in FIG. 3 to the front end and the left side surface of the locked portion 1e), the risk of the lid member 2 falling off is completely eliminated. In particular, since the drainage from each water facility joins inside the drainage header H, the pressure fluctuation is very likely to occur, and the adoption of the present invention in which the lid member 2 is not likely to fall off is very preferable.
Although the method of attaching the lid member 2 to the inlet 1a of the drainage header H has been described here, the same procedure is used when attaching the lid member 2 to the inlet 1c of the drainage branch pipe or the opening of the inspection port 1d. .
The lid member 2 attached to the inlet 1c and the inspection port 1d of the drainage branch pipe is the same as the lid member 2 attached to the inlet 1a of the upstream drainage pipe 3, but the inlet 1c and the inspection port of the drainage branch pipe. The diameter of the inlet 1a of the upstream drainage pipe 3 may differ from 1d. In that case, the size of the lid member 2 changes accordingly, but the configuration is the same.

  As described above, according to the present invention, the cap member 2a of the lid member 2 is inserted into the inflow port 1a and the lid member 2 is slightly rotated counterclockwise. Although it can be attached to the opening of the inflow port 1a, if the locking portion 2c is merely an L-shaped protruding piece, it is strong against the pressure from the inside of the drainage header H as described above. However, if a clockwise force is applied to the lid member 2 due to vibration or the like, the locked state of the locking portion 2c and the locked portion 1e may be released (of course, depending on the shape of the locking portion 2c). Counter-clockwise force does not release the locked state). Therefore, as shown in FIG. 5A, the locking portion 2c of the lid member 2 of the present invention is formed with a stopper 20c. The detachment stopper 20c is a protrusion formed at the front end portion (the end opposite to the flange portion 2b) of the locking portion 2c toward the flange portion 2b, and the detachment prevention 20c. Is in contact with the locked portion 1e, so that the locked state of the locked portion 2c and the locked portion 1e is reliably released even when a clockwise force is applied to the lid member 2 due to vibration or the like. To prevent. This will be described in more detail. The stopper 20c has a distance from the stopper 20c to the flange portion 2b when the lid member 2 is inserted into the opening of the inflow port 1a. It is formed at a position that is shorter than the distance from the surface to the flange portion 2b, and is formed at a location where it first contacts when the locking portion 2c and the locked portion 1e are locked. Therefore, in order to lock the locking portion 2c and the locked portion 1e, it is necessary that the locking stopper 20c first gets over the locked portion 1e, and a corresponding force is required. When a corresponding force is applied, the locking portion 2c is elastically deformed outward to overcome the locked portion 1e, and when the detachment stopper 20c passes through the locked portion 1e, the original shape is restored again by the restoring force. Returning to FIG. 2, the locking portion 2c and the locked portion 1e are locked. On the contrary, in order to release the locked state of the locking portion 2c and the locked portion 1e, it is necessary that the locking member 20c again gets over the locked portion 1e, so that the same force as described above is required ( By increasing the angle of inclination of the inner surface of the stopper 20c, it is possible to require more than a corresponding force.) With this lower force, the locking state of the locking portion 2c and the locked portion 1e is reduced. It will not be released. The corresponding force is much larger than the force that is normally applied due to vibration or the like, so that even if the force acts on the lid member 2 in the clockwise direction, the locking portion 2c and the locked portion are locked. The locked state of the portion 1e is not released, and there is no fear that the lid member 2 will drop off.

  In addition, if the latching | locking part 2c of the cover member 2 is reliably latched with the to-be-latched part 1e of the inflow ports 1a and 1c and the inspection port 1d, as above-mentioned, it is an L-shaped protrusion piece. For example, the engaging portion 2c cut out in an L shape as shown in FIG. 5B may be used, or an L-shaped groove may be used as the engaging portion 2c. Also good.

  Further, the stopper 20c formed on the locking portion 2c is not limited to the above shape, and may be a protrusion formed in a substantially semispherical shape as shown in FIG. Good. Further, as shown in FIG. 5 (c), a locking portion 20c is formed in the locked portion 1e, and the locking portion 20c is fitted into a recess provided in the locking portion 2c so that the locking portion You may prevent that the locked state of 2c and the to-be-latched part 1e is cancelled | released.

  Further, in the above embodiment, the locking part 2 c is formed in the lid member 2, but the locking part is formed in the inflow ports 1 a and 1 c and the inspection port 1 d of the drainage header H, and the lid member 2 is engaged. A locking part may be formed, and both the locking part and the locked part may be formed in the lid member 2, the inlets 1a and 1c, and the inspection port 1d.

  FIG. 7 is an exploded front view showing a lid member mounting structure according to another embodiment of the present invention.

  As described above, the lid member mounting structure of the present invention is not employed only in the inlets 1a and 1c of the drainage header H and the opening of the inspection port 1d. The present invention can also be applied to an embedded piping facility or an opening of the outdoor drainage 6 shown in FIG.

  The piping facility embedded in the residential land shown in FIG. 7 has an upstream drain pipe 7, a downstream drain pipe 8, a drainage basin 11 and the like embedded in the residential land, and rainwater that falls on the roof of the house and the residential land. The water is collected and led to public sewerage facilities.

  As shown in FIG. 7, the drainage basin 11 embedded in the residential land is integrally provided with a cylindrical inflow port 11b and an outflow port 11c into which the upstream drainage pipe 7 and the downstream drainage pipe 8 are inserted at both left and right ends. In addition, a substantially reverse T-shaped synthetic resin drainage basin 11 having a circular opening at its upper end projecting, is provided in the inspection opening 11a. 10 is inserted.

  The height adjustment cylinder 10 is a synthetic resin cylinder for allowing the lid member 20 attached to the upper opening thereof to face the ground surface, and as shown in FIG. 7, the outer peripheral surface of the height adjustment cylinder 10 Two locked portions 1e similar to those shown in FIGS. 1 to 6 described above are provided on the upper end portion of the first and second locking portions 1e and the lid described below. The lid member 20 is detachably attached to the upper opening of the height adjusting cylinder 10 by being latched with the latching portion 2c of the member 20.

As shown in FIG. 7, the lid member 20 attached to the height adjusting cylinder 10 is composed of a lid member main body 20A formed of resin concrete or synthetic resin, and an adjuster 20B made of synthetic resin. The rear edge of the lid member main body 20A is placed on the upper opening end face. At the lower end portion of the adjuster 20B, two locking portions 2c that are locked to the locked portion 1e of the height adjusting cylinder 10 are formed. This locking portion 2c is an L-shaped notch similar to that shown in FIG. 5 (b) described above, and a locking stopper 20c similar to the above is formed in the vicinity of the bent portion on the inner surface thereof. Has been. Then, the locked portion 1e of the height adjusting cylinder 10 is inserted from the insertion port of the locking portion 2c of the adjuster 20B, and the adjuster 20B is slightly rotated by applying a corresponding force (in this case, clockwise). The stopper 20c gets over the locked portion 1e, and the locking portion 2c and the locked portion 1e are firmly locked.
Since the other structure of the attachment structure of the lid member shown in FIG. 7 is the same as that of the embodiment shown in FIGS. 1 to 6 described above, the same members are denoted by the same reference numerals and the description thereof is omitted.

As described above, the lid member mounting structure of the present embodiment is obtained by simply and reliably mounting the lid member 20 on the upper opening of the height adjusting cylinder 10 inserted into the inspection port 11a of the drainage basin 11. With this, the inside of the drainage basin 11 can be inspected and maintained only by removing only the lid member main body 20A placed on the adjuster 20B.
Note that the lid member main body 20A and the adjuster 20B may be integrally formed, and in such a case, the force in the direction in which the lid member 20 comes off due to pressure fluctuations of the piping equipment in the residential land (in this case) Even if an upward force) is applied, there is no possibility that the lid member 20 will come off.

  As described above, various aspects have been described in detail. However, the lid member mounting structure of the present invention is not limited to these, and other than these, as long as the tube member having the opening is closed by the lid member. Needless to say, this technique can also be applied.

H Drainage header 1 Header joint 1a Inlet (for upstream drainage pipe)
1b Outlet 1c Inlet (for drainage branch pipe)
1d Inspection Port 1e Locked Portion 2 Lid Member 2a Cap Body 2b Flange Portion 2c Locking Portion 20c Detachment 2d Rod-shaped Protrusion 2e Packing Inserting Groove 2f Waterproof Packing 20 Lid Member 20A Lid Member Body 20B Adjuster 3 Upstream Drain Pipe 4 Downstream side drainage pipe 5 Soil concrete 6 Outdoor drainage pipe 7 Upstream side drainage pipe 8 Downstream side drainage pipe 10 Height adjustment tube 11 Drainage bowl 11a Inspection port 11b Inlet 11c Outlet

Claims (6)

A lid member mounting structure for closing the opening of the tube member,
A locking part or / and a locked part are formed on the lid member, and the locked part or / and the locking part to be locked with the locking part or / and the locked part are provided on the tube member. Formed in the vicinity of the opening,
The lid member is attached to the opening of the tube member by the latching portion or / and the latched portion of the lid member and the latched portion or / and the latching portion of the tube member being latched. An attachment structure for a lid member.   The pipe member is a drainage header having a plurality of inlets and inspection ports (hereinafter referred to as inlets, etc.), and a locked part or / and a locked part or / and a locked part of the lid member. A locking portion is formed at the inlet or the like, and the locking portion or / and the locked portion of the lid member and the locked portion or / and the locking portion such as the inlet are locked. The lid member mounting structure according to claim 1, wherein the lid member is attached to an opening such as an inflow port of the drainage header.   The locking part or / and the locked part of the lid member are formed to extend from the rear end of the outer periphery of the lid member toward the pipe member, and the locked part or / and the locking part of the pipe member Is formed on the outer peripheral surface of the pipe member, and in a state where the lid member is attached to the opening of the pipe member, the latching part of the lid member or / and the latched part such as the inflow port or the like 3. The lid member mounting structure according to claim 1, wherein the locking portion is located on an outer peripheral surface side of the tube member.   The locking part is either an L-shaped projecting piece, a notch, or a groove, and the locked part is a convex part, and the lid member is brought into contact with the opening of the tube member to rotate the lid member. 4. The lid member mounting structure according to claim 1, wherein the locking portion and the locked portion are locked.   5. The lock according to claim 1, wherein the locking portion and / or the locked portion are formed with a locking member that prevents the locking portion and the locked portion from being released from the locked state. The lid member mounting structure according to any one of the above.   A lid member that closes the opening of the pipe member, and a locking part or / and a locked part that locks with the locked part or / and the locking part formed in the vicinity of the opening of the pipe member, It is formed to extend from the rear end of the outer periphery of the lid member toward the tube member, and in the state where the lid member is attached to the opening of the tube member, the locking portion or / and the locked portion of the lid member are A lid member located on the outer peripheral surface side of the tube member.

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